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SN54ALS244B Datasheet(PDF) 1 Page - Texas Instruments |
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SN54ALS244B Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page SN54ALS244B, SN54AS244, SN74ALS244B, SN74AS244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 – D2661, DECEMBER 1982 – REVISED JULY 1987 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Copyright © 1987, Texas Instruments Incorporated 1 • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers • PNP inputs Reduce DC Loading • Package Options include Plastic Small Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs • Dependable Texas instruments Quality and Reliability description These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmit- ters. Taken together with the ’ALS240A, ’ALS241A, ’AS240, and ’AS241, these devices provide the choice of selected combinations of inverting outputs, symmetrical G (active-low input control) inputs, and complementary G and G inputs. The –1 version of the SN74ALS244B is identical to the standard version except that the recommended maximum IOL is increased to 48 mA. There is no –1 version of the SN54ALS244B. The SN54ALS244B and SN54AS244 are characterized for operation over the full military temperature range of – 55 °C to 125°C. The SN74ALS244B and SN74AS244 are characterized for operation from 0°C to 70°C. logic symbol† 19 11 13 15 17 2G 2A1 2A2 2A3 2A4 9 7 5 3 2Y1 2Y2 2Y3 2Y4 EN EN 1Y4 1Y3 1Y2 1Y1 12 14 16 18 1A4 1A3 1A2 1A1 1G 8 6 4 2 1 †This is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 1Y4 1Y3 1Y2 1Y1 12 14 16 18 1A4 1A3 1A2 1A1 1G 8 6 4 2 1 2A4 2A3 2A2 2A1 2G 17 15 13 11 19 1Y4 1Y3 1Y2 1Y1 3 5 7 9 Pin numbers are for DW, J, and N packages. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. SN54ALS244B, SN54AS244 ...J PACKAGE SN74ALS244B, SN74AS244 . . . DW OR N PACKAGE (TOP VIEW) SN54ALS244B, SN54AS244 . . . FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2G 1Y1 A24 1Y2 2A3 1Y3 2A2 1Y4 2A1 3 2 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 1Y1 2A4 1Y2 2A3 1Y3 1A2 2Y3 1A3 2Y2 1A4 |
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